Electrochemical analysis of hydrogen membrane fuel cells
Electrochemical analysis of hydrogen membrane fuel cells
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氢膜燃料电池的电化学分析
DOI：
10.1016/j.jpowsour.2008.08.004
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发表时间：
2008
影响因子：
9.2
通讯作者：
T. Ishihara
中科院分区：
文献类型：
--
作者：
Naoki Ito;S. Aoyama;Takatoshi Masui;S. Matsumoto;H. Matsumoto;T. Ishihara
对采用SrZr0.8In0.2O3−δ电解质的氢膜燃料电池进行了电化学分析，这是一种新型燃料电池，其特点是在致密金属阳极上支撑超薄质子导体。大部分电压损失来自阴极和电解质，仅在高电流密度区域观察到少量阳极极化。阴极极化比 SOFC 低大约一个数量级。此外，在600℃下，薄膜电解质的电导率与烧结体的电导率几乎相同；然而，在 400°C 时，其尺寸会增大数倍。 TEM显微照片显示，薄膜电解质主要由长柱状晶体组成，这种晶体结构可能与600℃以下电导率的增强有关。
An electrochemical analysis was conducted with respect to a hydrogen membrane fuel cell with SrZr0.8In0.2O3−δelectrolyte, which is a new type of fuel cell featuring an ultra-thin proton conductor supported on a dense metal anode. Most of the voltage loss derives from the cathode and the electrolyte, and a small amount of anode polarization was observed only in regions with high current density. The cathode polarization was approximately an order of magnitude lower than that of SOFCs. Furthermore, the conductivity of the film electrolyte was almost identical to that of the sinter at 600°C; however, it was several times as large at 400°C. A TEM micrograph revealed that the film electrolyte consists mainly of long columnar crystals, and this crystal structure can be related to the conductivity enhancement below 600°C.